I know exactly how you feel, im always the youngest and people seem to think that makes you the lesser musician or person.
Producers are the worst i find but my advice is to keep a cool head and walk away then maybe have a quiet word to who ever is in charge
in terms of friends though i would tell them whats what.
Or better yet take it on board as more incentive, aim higher, work harder and leave the wanna-bees and egos behind.